#include <iostream>

//类型不明确
#define Max 100

//编译器定下来
//const int Max = 10;
void func(short a)
{
    std::cout<<"short"<<std::endl;
}

void func(int a)
{
    std::cout<<"int"<<std::endl;
}

int main()
{
    //func(NULL);
    //空指针
    // func(nullptr);
    func(Max);
    return 0;
}